Also called creeping thistle, the jaggy purple flowering lawn weed is considered one of the most invasive weeds in the world. Both compost and worm castings (which are sometimes called compost, but they are so much more I really can’t bring myself to call them compost) are made from digested organic matter, but there are some important differences. Don’t get me wrong, I’m not knocking compost (perish the thought), but worm castings are special! But please avoid introducing earthworms into your g...